[postfix-jp:03309] エラーメ ッセージ

[postfix_general <postfix_general@xxxxxxxxxxx>]

清水です。

FreeBSD5.1
postfix2.0.13で

以下のエラーメッセージ？が頻繁に出力されます。
これを表示させないようにするには、どの様にすればよろしいでしょうか？
postfix/sendmail[数字]: fatal: unsupported: -bH
postfix/sendmail[数字]: fatal: unsupported: -bh

postconf -n の結果
command_directory = /usr/local/sbin
config_directory = /usr/local/etc/postfix
content_filter = smtp:127.0.0.1:10024
daemon_directory = /usr/local/libexec/postfix
debug_peer_level = 2
disable_dns_lookups = yes
home_mailbox = Maildir/
mailbox_command = /usr/local/bin/procmail
mailq_path = /usr/local/bin/mailq
manpage_directory = /usr/local/man
mynetworks = 192.168.0.0/24, 127.0.0.0/8
mynetworks_style = subnet
newaliases_path = /usr/local/bin/newaliases
readme_directory = no
sample_directory = /usr/local/etc/postfix
sender_canonical_maps = hash:/usr/local/etc/postfix/sender_canonical
sendmail_path = /usr/local/sbin/sendmail
setgid_group = maildrop
unknown_local_recipient_reject_code = 450